| 1 | /* $Id: macdefs.h,v 1.4 2009/01/24 21:43:49 gmcgarry Exp $ */
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| 2 | /*
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| 3 | * Copyright (c) 2003 Anders Magnusson (ragge@ludd.luth.se).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | * 1. Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * 2. Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * 3. The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /*
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| 30 | * Machine-dependent defines for both passes.
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| 31 | */
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| 32 |
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| 33 | /*
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| 34 | * Convert (multi-)character constant to integer.
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| 35 | */
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| 36 | #define makecc(val,i) lastcon = i ? (val<<8)|lastcon : val
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| 37 |
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| 38 | #define ARGINIT 32 /* # bits above r5 where arguments start */
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| 39 | #define AUTOINIT 64 /* # bits below r5 where automatics start */
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| 40 |
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| 41 | /*
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| 42 | * Storage space requirements
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| 43 | */
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| 44 | #define SZCHAR 8
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| 45 | #define SZBOOL 8
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| 46 | #define SZINT 16
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| 47 | #define SZFLOAT 32
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| 48 | #define SZDOUBLE 64
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| 49 | #define SZLDOUBLE 64
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| 50 | #define SZLONG 32
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| 51 | #define SZSHORT 16
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| 52 | #define SZLONGLONG 64
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| 53 | #define SZPOINT(t) 16
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| 54 |
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| 55 | /*
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| 56 | * Alignment constraints
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| 57 | */
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| 58 | #define ALCHAR 8
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| 59 | #define ALBOOL 8
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| 60 | #define ALINT 16
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| 61 | #define ALFLOAT 16
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| 62 | #define ALDOUBLE 16
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| 63 | #define ALLDOUBLE 16
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| 64 | #define ALLONG 16
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| 65 | #define ALLONGLONG 16
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| 66 | #define ALSHORT 16
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| 67 | #define ALPOINT 16
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| 68 | #define ALSTRUCT 16
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| 69 | #define ALSTACK 16
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| 70 |
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| 71 | /*
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| 72 | * Min/max values.
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| 73 | */
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| 74 | #define MIN_CHAR -128
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| 75 | #define MAX_CHAR 127
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| 76 | #define MAX_UCHAR 255
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| 77 | #define MIN_SHORT -32768
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| 78 | #define MAX_SHORT 32767
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| 79 | #define MAX_USHORT 65535
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| 80 | #define MIN_INT (-0x7fff-1)
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| 81 | #define MAX_INT 0x7fff
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| 82 | #define MAX_UNSIGNED 0xffff
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| 83 | #define MIN_LONG (-0x7fffffff-1)
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| 84 | #define MAX_LONG 0x7fffffff
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| 85 | #define MAX_ULONG 0xffffffff
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| 86 | #define MIN_LONGLONG 0x8000000000000000LL
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| 87 | #define MAX_LONGLONG 0x7fffffffffffffffLL
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| 88 | #define MAX_ULONGLONG 0xffffffffffffffffULL
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| 89 |
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| 90 | /* Default char is signed */
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| 91 | #undef CHAR_UNSIGNED
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| 92 | #define BOOL_TYPE CHAR /* what used to store _Bool */
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| 93 |
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| 94 | /*
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| 95 | * Use large-enough types.
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| 96 | */
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| 97 | typedef long long CONSZ;
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| 98 | typedef unsigned long long U_CONSZ;
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| 99 | typedef long long OFFSZ;
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| 100 |
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| 101 | #define CONFMT "%lld" /* format for printing constants */
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| 102 | #define LABFMT "L%d" /* format for printing labels */
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| 103 | #ifdef LANG_F77
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| 104 | #define BLANKCOMMON "_BLNK_"
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| 105 | #define MSKIREG (M(TYSHORT)|M(TYLONG))
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| 106 | #define TYIREG TYLONG
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| 107 | #define FSZLENG FSZLONG
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| 108 | #define AUTOREG EBP
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| 109 | #define ARGREG EBP
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| 110 | #define ARGOFFSET 8
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| 111 | #endif
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| 112 |
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| 113 | #define BACKAUTO /* stack grows negatively for automatics */
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| 114 | #define BACKTEMP /* stack grows negatively for temporaries */
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| 115 |
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| 116 | #undef FIELDOPS /* no bit-field instructions */
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| 117 | #define RTOLBYTES /* bytes are numbered right to left */
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| 118 |
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| 119 | #define ENUMSIZE(high,low) INT /* enums are always stored in full int */
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| 120 |
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| 121 | /* Definitions mostly used in pass2 */
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| 122 |
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| 123 | #define BYTEOFF(x) ((x)&01)
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| 124 | #define wdal(k) (BYTEOFF(k)==0)
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| 125 | #define BITOOR(x) (x) /* bit offset to oreg offset XXX die! */
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| 126 |
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| 127 | #define STOARG(p)
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| 128 | #define STOFARG(p)
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| 129 | #define STOSTARG(p)
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| 130 | #define genfcall(a,b) gencall(a,b)
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| 131 |
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| 132 | #define FINDMOPS /* pdp11 has instructions that modifies memory */
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| 133 |
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| 134 | #define szty(t) ((t) == DOUBLE || (t) == LONGLONG || (t) == ULONGLONG ? 4 : \
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| 135 | (t) == FLOAT || (t) == LONG || (t) == ULONG ? 2 : 1)
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| 136 |
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| 137 | /*
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| 138 | * The pdp11 has 3 register classes, 16-bit, 32-bit and floats.
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| 139 | * Class membership and overlaps are defined in the macros RSTATUS
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| 140 | * and ROVERLAP below.
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| 141 | *
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| 142 | * The classes used on pdp11 are:
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| 143 | * A - 16-bit
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| 144 | * B - 32-bit (concatenated 16-bit)
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| 145 | * C - floating point
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| 146 | */
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| 147 | #define R0 000 /* Scratch and return register */
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| 148 | #define R1 001 /* Scratch and secondary return register */
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| 149 | #define R2 002 /* Scratch register */
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| 150 | #define R3 003 /* Scratch register */
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| 151 | #define R4 004 /* Scratch register */
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| 152 | #define R5 005 /* Frame pointer */
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| 153 | #define SP 006 /* Stack pointer */
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| 154 | #define PC 007 /* Program counter */
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| 155 |
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| 156 | #define R01 010
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| 157 | #define R12 011
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| 158 | #define R23 012
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| 159 | #define R34 013
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| 160 |
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| 161 | #define FR0 020
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| 162 | #define FR1 021
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| 163 | #define FR2 022
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| 164 | #define FR3 023
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| 165 | #define FR4 024
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| 166 | #define FR5 025
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| 167 | #define FR6 026
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| 168 | #define FR7 027
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| 169 |
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| 170 | #define MAXREGS 030 /* 24 registers */
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| 171 |
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| 172 | #define RSTATUS \
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| 173 | SAREG|TEMPREG, SAREG|TEMPREG, SAREG, SAREG, SAREG, 0, 0, 0, \
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| 174 | SBREG, SBREG, SBREG, SBREG, 0, 0, 0, 0, \
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| 175 | SCREG, SCREG, SCREG, SCREG, 0, 0, 0, 0
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| 176 |
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| 177 | #define ROVERLAP \
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| 178 | /* 8 basic registers */\
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| 179 | { R01, -1 }, \
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| 180 | { R01, R12, -1 }, \
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| 181 | { R12, R23, -1 }, \
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| 182 | { R23, R34, -1 }, \
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| 183 | { R34, -1 }, \
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| 184 | { -1 }, \
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| 185 | { -1 }, \
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| 186 | { -1 }, \
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| 187 | \
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| 188 | /* 4 long registers */\
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| 189 | { R0, R1, R12, -1 }, \
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| 190 | { R1, R2, R01, R23, -1 }, \
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| 191 | { R2, R3, R12, R34, -1 }, \
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| 192 | { R3, R4, R23, -1 }, \
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| 193 | { -1 }, \
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| 194 | { -1 }, \
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| 195 | { -1 }, \
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| 196 | { -1 }, \
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| 197 | \
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| 198 | /* The fp registers do not overlap with anything */\
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| 199 | { -1 },\
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| 200 | { -1 },\
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| 201 | { -1 },\
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| 202 | { -1 },\
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| 203 | { -1 },\
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| 204 | { -1 },\
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| 205 | { -1 },\
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| 206 | { -1 },
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| 207 |
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| 208 |
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| 209 | /* Return a register class based on the type of the node */
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| 210 |
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| 211 | #define PCLASS(p) (p->n_type < LONG || p->n_type > BTMASK ? SAREG : \
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| 212 | (p->n_type == LONG || p->n_type == ULONG ? SBREG : SCREG))
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| 213 |
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| 214 | #define NUMCLASS 3 /* highest number of reg classes used */
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| 215 |
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| 216 | int COLORMAP(int c, int *r);
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| 217 | #define GCLASS(x) (x < 8 ? CLASSA : x < 16 ? CLASSB : CLASSC)
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| 218 | #define DECRA(x,y) (((x) >> (y*5)) & 31) /* decode encoded regs */
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| 219 | #define ENCRD(x) (x) /* Encode dest reg in n_reg */
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| 220 | #define ENCRA1(x) ((x) << 5) /* A1 */
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| 221 | #define ENCRA2(x) ((x) << 10) /* A2 */
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| 222 | #define ENCRA(x,y) ((x) << (5+y*5)) /* encode regs in int */
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| 223 | #define RETREG(x) ((x) == LONG || (x) == ULONG ? R01 : \
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| 224 | (x) == FLOAT || (x) == DOUBLE ? FR0 : R0)
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| 225 |
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| 226 | //#define R2REGS 1 /* permit double indexing */
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| 227 |
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| 228 | /* XXX - to die */
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| 229 | #define FPREG R5 /* frame pointer */
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| 230 | #define STKREG SP /* stack pointer */
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| 231 |
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| 232 | /* A bunch of specials to make life easier for pdp11 */
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| 233 | #define SANDSCON (MAXSPECIAL+1)
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| 234 | #define SINCB (MAXSPECIAL+2) /* post-increment */
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| 235 | #define SINCW (MAXSPECIAL+3) /* post-increment */
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| 236 | #define SARGSUB (MAXSPECIAL+4) /* arg pointer to array */
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| 237 | #define SARGINC (MAXSPECIAL+5) /* post-increment arg */
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